How Does search engines index Restful multilingual sites

Question

Im working on a multilingual site using asp.net mvc, and im wondering how search engines will index my site if urls will be the same for all the languages e.g.:

mysite.com/article/25/my-first-article //for spanish
mysite.com/article/25/my-first-article //for english

Im controlling language set with this action:

public ActionResult SetCulture(string culture)
        {
            HttpContext.Session["culture"] = culture
            return Redirect(Request.UrlReferrer.ToString());
        }  

I control the current language using some links like:

<%= Html.ActionLink("English", "SetCulture", new {controller = "Culture", culture = "en"})%>
<%= Html.ActionLink("Español", "SetCulture", new {controller = "Culture", culture = "es"})%>

Will search engines index both versions of the content?

Does this have any side effects on Page Rank?

Answer 1

You may take a look at the following tips. Here are some that should basically answer your question:

• Keep the content for each language on separate URLs
• Don't use cookies to show translated page versions

So in terms of SEO what you are doing is not good.